Nurling-tool.



C. R. SCHLEY,

NURLING TOOL.

APPLIOATION FILED APR. 6, 1914.

1,1 12,662, Patented Oct. 6, 1914.

3 SHEETS-SHEET 1.

C. R. SGHLEY. NURLING TOOL.

APPLICATION FILED APR. s, 1914.

1,1 12,662. Patented oct. 6, 1914.

3 SHEETS-SHEET 3.

I a@ llmiimxI yl Y 19 E. 52 a 3 we/wtoz llll'lllED @Titi @FFCE NURLNG-TOOL.

To all whom 'it may concern.'

Be it known that l, CARL R. Soi-rter, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and Stat-e of Pennsylvania, have invented certain new and useful lmprovements in Noding-Tools, of which the following is a specification.

My invention relates to improvements in nurling tools, the object of the invention being to provide an improved nurling tool which will not cause excessive wear on the shears of the lathe or the bearings in the headstock. v

A furtherV object is to provide a nurling tool of the character statedwhich will have no tendency to bend the shaft or tube being nurled as the parts operate on a clamping principle rather than by a pressure action such as ordinary nurling to-ols do.

A further object is to provide a nurling tool of the character stated which be operated close up to the chuck of a machine and which will not push the lathe centers out of alinement. K

A further object is to provide a nurling tool of the character stated of strong and durable construction, and capable of a Wide range of usefulness on various types of machine.

WT ith these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinafter described and pointed out in the claims..

ln the accompanying drawings: Figure l is a. view in side elevation illustrating the preferred form of my improved nurling tool. Fig. 2 is a view in end elevation showing the sha t to be nurled in dotted lines. Fig. 3 is a view in section on the line 3 3 of Fig. l. Fig. 4 is perspective view of one member of the nurling tool. Fig. 5 is a view in longitudinal section on an enlarged scale taken on the staggered line 5 5 of Fig. Q. 6 is a fragmentary plan view of the stock 2. Fig.. 7 is a perspective view of the other nurling tool member. Fig. 8 is a view in side elevation illust-rating a modification. Fig. 9 is a view in horizontal section on the line 9 9 of Fig. 8. Fig. l0 is a fragmentary view in longitudinal section on the line l0 l0 of Fig. S. Fig. ll is a view in side elevation illustrating another modification,

Specification of Letters Eatent.

Application filed April 6, 1914:.

Serial No. 83),034.

and Fig. l2 is a view in section on the line 1:2 12 of Fig. l1.

Referring to my improved nurling tool illustrated in Figs. l to 7 inclusive, l represents the ordinary too-l post of a lathe or other like machine in which the stock 2 is secured by a clamping screw 3. -l is the ordinary wedge interposed between the ring 5 and stock 2 and capable of adjustment to vary the angle of the stock, while 6 represents a fragmentary portion of the ordinary lathe cross slide.

lllhile l refer to my improvements in connection with a lathe, l would have it understood that l may use the same with screw machines, turret lathes, and various other mechanisms, and am not limited in the use.

My improved nurling tool comprises two members 'l' and 8, the former l shall refer to as a frame, and the latter as an arm. The frame 7 is of general yoke shape, and at one end has a fixed arm lO which cooperates with the arm 8, the klatter being` pivoted to the frame 7. The frame 7 has aslot 12'to receive one end of the arm 8, said frame and arm having registering openings 13 and 14 respectively for the reception of an integral journal l5 on the stock 2.

16 represents a headed screw engaging in a threaded socket 17 in journal l5, and holding the nurling tool on the stock, the stock being` enlarged at its outer end as shown clearly at 18 to locate the pivotal juncture of the two members in a plane sufficiently high to properly perform the functions of the device. lt will also be noted, particularly by reference to Fig. 6, that the stock 2 is bent so that the other parts are located at an angle to the stock and may be positioned close up to the chuck of the lathe when at work.

The frame 7 is recessed at one lside. as shown at 19 to accommodate the head of screw 16 and prevent any protuberance from this surface as it is desirable in many cases to nurl close up to the chuck. j

The pivoted arm 8 and the stationary arm l0 carry nurls Q0, and while the invention is not limited to any particular number of nurls, I preferably `provide one'on the arm S and two on the fixed arm l0, although this number may, of course, be varied and the nurls, variously arranged.

The invention is not limited to any particular mount for the nurls, although I' prefratentea oet. 6, 1914. l l

erably recess the members as shown at 2l to accommodate or house the greater portion of the nurls, allowing only a relatively small periphery to project from the surface suiiiciently to engage the shaft ll to be nurled.

llVhile l shall hereinafter refer to the article being` nurled as a shaft, it is to be understood that this term is selected arbitrarily, as any article can be nurled as well as a shaft.

rlhe upper end of the frame 7 is provided with an integral screw-threaded sleeve 22 to receive an adjusting screw 9. The lower end of the screw 9 is preferably rounded and engages in a groove Q3 in the upper surface of arm 8. It will be noted that this upper surface of the arm 8 curves longitudinally, so that by the downward adjustment of the screw 9, the arm S will be forced toward the fixed arm l0, the lower end of the screw riding in the groove Q3 and which prevents j a side movement of the end of arm S at all positions of adjustment.

ln the modification illustrated in Figs. 8, 9, and l0, the stock 2 erally projecting enlargement 2liat its free end to receive a screw 25 connecting the frame 26 of the nurling tool to the stock. In this form of my invention, the pivoted arm 97 corresponding to arm 8 of the preferred form is laterally off-set as cleary shown in Fig. 9, and has a pivot screw 9.8 entirely independent of the screw ln this modified form, l provide but single nurl QG on the pivoted arm 27, and also on the fixed arm 28E, but of course the number `of nurls may be varied.

In the modification illustrated in Figs. 11 and lf2, l provide improved means for clamping the frame 29 to the stoclr '2, which clamping means also operates to bind the pivoted arm 30 corresponding to arms 8 and 27 of the forms above described. ln this modification, the `arm 30 is located in a slot 3l in frame 29, and the walls of this slot are pressed toward each other by the action of the head 32 of the screw 83.

It will be noted, particularly by reference to Fig. 12, that the wall of frame 29 is at an incline so that the head 32 of screw 33 engages at its upper portion only, hence the pressure of the head inwardly serves to press the walls of the slot 3l toward each other, at the same time frictionally binding the frame to the stock. This clamping action prevents any pivotal movement of the nurling tool after it is once set.

ln the sever-al modifications, I have used like reference numerals to indicate like parts corresponding with the preferred form.

Various other slight changes might be made in the general form and arrangement of parts described without departing from my invention, and hence l do not limit myself to the precise details set forth, but consider myis provided with a latself at liberty to malte such changes and alterations as fairly fall within the spirit and scope of the appended claims.

Having thus described my invention, what l claim as new and desire to secure by lietters Patent is:

l. A. nurling tool comprising a frame having a fixed arm at one end, and an adjusting screw at its other end, an arm pir oted at one end to an intermediate portion of the frame and engaged by the screw, and nurls carried by both of said arms, substantially as described.

2. A nurling tool comprising a frame having a fixed arm at one end, and an adjusting screw at its other end, an arm pivoted to the frame and engaged by the screw, said pivoted arm having a longitudinal groove in one edge into which the screw projects, and nurls carried by both of said arms, sul stantially as described.

3. The combination with a stock, of a frame pivotally connected to the stock and having a fixed arm at one end, and an in ternally screw-threaded bearing at its other end, an arm pivoted at one end to an intermediate portion of the frame, a screw in said bearing engaging the pivoted arm, and nurls carried by both of said arms, substantially as described.

4C. The combination with a stock, of a frame pivotally connected to the stock and having a lixed arm at one end, and an internally screw-threaded bearing at its other end, an arm pivoted at one end to an intermediate portion of the frame, a screw in said bearing engaging the pivoted arm, a plurality of nurls on one of said arms, and a single nurl on the other of said arms, substantially as described.

5. rEhe combination with a stock having an enlargement at one end, of a frame having a fixed arm at one end and an internally screw-threaded bearing at its other end, an arm, a screw pivotally securing the lastmentioned arm to the intermediate portion of the frame and also securing the frame to the enlargement of the stock, a screw in said bearing engaging the pivoted arm, and nurls carried) by both of said arms, substantially as described.

6. rllhe combination with a stock, of a frame pivotally connected to the stock and having a fined arm at one end, and an internally screw-threaded bearing at its other end, an arm pivoted to the frame, a screw in said bearing engaging the pivoted arm, nurls carried by both of said arms, and said stock bent at an angle adjacent its point of attachment with the frame, substantially as described.

7. The combination with a stock, of a frame pivotally connected to the stoel; and having` a fixed arm at one end, and an internally screw-threaded bearing at its other end, an arm pvoted to the frame, a screw in said bearing` engaging the pivoted arm, a plurality of nurls on one of said arms, a single nurl on the other of said arms, and said stock bent at an angle adjacent its point of attachment with the frame, substantially as described.

8. The combination with a stock having an enlargement at one end, of a frame having a fixed arm at one end and an internally screw-threaded bearing at its other end, an arm, a screw pivotally securing the lastmentioned arm to the intermediate portion of the frame and also securing the frame to the enlargement of the stock, a screw in said bearing engaging the pivoted arm, nurls carried by both of said arms, and said stock bent at an angle adjacent its point of attachment with the frame, substantially as described.

In testimony whereof I have signed my name to this speciiication in the presence of tWo subscribing` Witnesses.

CARL RUDOLF SCHLEY.

Witnesses:

DAVID T. OCONNELL, FRANCIS J. MoRRlssEY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Iatentl, Washington, D. C.` 1 

